code: def _gen_rand_str(n: int, seed: int):
      random.seed(seed)
      return "".join(
          random.choices(string.ascii_letters + string.digits, k=n)
      )
  
file_path: audio/test/torchaudio_unittest/datasets/fluentcommands_test.py
imports: import csv
  import os
  import random
  import string
  from torchaudio.datasets import fluentcommands
  from torchaudio_unittest.common_utils import get_whitenoise, save_wav, TempDirMixin, TorchaudioTestCase
label_desc: Use image node_id 1 for calling a global function with example usage: _gen_rand_str(n, seed) and returns: str